Leanna guesses on four multiple choice test questions in a row. If each question has 3 possible answers, what is the probability that Leanna will guess the answer to the 4th question correctly?
1 Answer
Aug 4, 2017
Explanation:
Each question has 3 possible answers and so there is one right answer within the 3 answers listed.
The existence of questions prior to (or after) question 4 have no influence on the guessing of question 4. This is very akin to flipping a coin 4 times and asking what the probability is of getting a heads on that fourth flip - it's the same as the probabilities of the preceding three flips.
